KX-NTV150NE — Panasonic PBX Service Manual (repair manual). Page 10

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10
KX-NTV150 Series  
7 Troubleshooting Guide
7.1.
No power supplied by PoE or AC Adaptor
7.2.
No image
1. Connect Ethernet cable with PoE  or AC Adaptor to Main Board.
2. Turn the multimeter to DCV setting.
3. Measure the voltage between TP20_5V9V  and TP14_GND.
4. Check if the value is DC+5V (+4.75V ~ +5.25V) in case of power
supplied by PoE, or check if the value isDC+9V (+8.1V ~ +9.9V)
in case of power supplied by AC Adaptor.
5. Disconnect Ethernet cable with PoE or AC Adaptor.
Malfunction
Main Board exchange.
1. Check Main Board PCB’A  (J1)Connect.
2. Check  if Main Board PCB'A _U1 is damaged.
3. Check if Sensor board functions normally.
*U1-(SOC, VVTK8112, VATICS)
*J1-(PIN HEADER, T-DPH20SD2GT-C0, DISNT)
Malfunction
Main Board exchange at first.
If trouble is not closed yet, Sensor Board need to exchange too.
J1 
U1 
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